CA1145624A - Adhesive tapes - Google Patents

Adhesive tapes

Info

Publication number
CA1145624A
CA1145624A CA000378106A CA378106A CA1145624A CA 1145624 A CA1145624 A CA 1145624A CA 000378106 A CA000378106 A CA 000378106A CA 378106 A CA378106 A CA 378106A CA 1145624 A CA1145624 A CA 1145624A
Authority
CA
Canada
Prior art keywords
fabric
yarns
adhesive
tape according
filling
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
CA000378106A
Other languages
French (fr)
Inventor
Timothy L. Sergeant
Luz E. Thomas
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kendall Co
Original Assignee
Kendall Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kendall Co filed Critical Kendall Co
Application granted granted Critical
Publication of CA1145624A publication Critical patent/CA1145624A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/20—Adhesives in the form of films or foils characterised by their carriers
    • C09J7/29—Laminated material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
    • B32B37/1207—Heat-activated adhesive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/024—Woven fabric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D1/00—Woven fabrics designed to make specified articles
    • D03D1/0011—Woven fabrics for labels
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D03D15/20—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads
    • D03D15/208—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads cellulose-based
    • D03D15/217—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads cellulose-based natural from plants, e.g. cotton
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D03D15/20—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads
    • D03D15/283—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads synthetic polymer-based, e.g. polyamide or polyester fibres
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D03D15/40—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the structure of the yarns or threads
    • D03D15/49—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the structure of the yarns or threads textured; curled; crimped
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D3/00—Woven fabrics characterised by their shape
    • D03D3/005—Tapes or ribbons not otherwise provided for
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/582—Tearability
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2405/00—Adhesive articles, e.g. adhesive tapes
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2400/00—Presence of inorganic and organic materials
    • C09J2400/20—Presence of organic materials
    • C09J2400/26—Presence of textile or fabric
    • C09J2400/263—Presence of textile or fabric in the substrate
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2201/00—Cellulose-based fibres, e.g. vegetable fibres
    • D10B2201/01—Natural vegetable fibres
    • D10B2201/02—Cotton
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2321/00—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D10B2321/02—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polyolefins
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2321/00—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D10B2321/02—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polyolefins
    • D10B2321/021—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polyolefins polyethylene
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
    • D10B2331/04—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyesters, e.g. polyethylene terephthalate [PET]
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2505/00—Industrial
    • D10B2505/02—Reinforcing materials; Prepregs
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/28—Web or sheet containing structurally defined element or component and having an adhesive outermost layer
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/28—Web or sheet containing structurally defined element or component and having an adhesive outermost layer
    • Y10T428/2848—Three or more layers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/10—Scrim [e.g., open net or mesh, gauze, loose or open weave or knit, etc.]
    • Y10T442/102—Woven scrim
    • Y10T442/164—Including a preformed film, foil, or sheet
    • Y10T442/169—Polyolefin film or sheet

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Botany (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Adhesive Tapes (AREA)
  • Laminated Bodies (AREA)
  • Woven Fabrics (AREA)
  • Decoration Of Textiles (AREA)

Abstract

ABSTRACT OF THE INVENTION

The tear properties of flexible adhesive tapes comprising a pliable base and a low-count open meshed fabric adhered thereto by a layer of adhesive are improved by the use of so-called texturized or false-twist yarns in the filling of the fabric.

Description

~S~24~

This invention relates to improvements in the tear character-istics of certain adhesive tapes~ particularly industrial tapes of the type known as duct tapes. Such tapes commonly comprise a pliable film base, such as polyethylenej a reinforcin~ open-meshed fabric, and an adhesive mass which anchors the fabric to the film, coating the fabric surface.

BACKGROUND OF THE INVENTION

It is customary for tapes of this nature to have a reinforcing fabric of spun cotton, raYon, or synthetic yarns, which provide strength to the tape in processing and in use. Such a fabric, when woven, normally varies in count from 32 to 44 warp yarns and 20 to 36 filling yarns per square inch, with the yarns 30's singles, of spun cotton.

Such fabrics have more than ade~uate strength for the reinforce-ment of such tapes, and for the sake of economy attempts have been made to utilize gauze fabrics of lower count, such as 24 X
20 or 20 X 12. However, in applications involving the uSe of the tape, it is customary to tear the tape across the warp yarns by hand, particularly when a number oE repeated applications are made as in sealing the joints in industrial ductwork. When tapes containing a low-count gauze, are thus used, they almost invariably tear in a ragged and frayed manner, with dangling threads and the likelihood of deformation of the film backing.

Attempts have been made to impxove the te~r charactexistics Qf tapes comprising low-count fabric$ by using stronger yarns in the filling, such as high-twist spun yarns, continuous filament
-2- ~

S6;~4 synthetic yarns, or even monofilament yarns, all with a marked lack of success.

It is with improvements in the tear ~roperties of such tapes that the present invention is concerned, and it is an object of the invention to provide an adhesive tape incorporating a low-count fabric which when torn crosswise by hand will tear in a smooth and even manner, SUMMARY OF THE INVENTION

It has now been found that so-called texturized or "false-twist"
yarns in the filling of low-count fabrics~ such as 24 X 2a or 20 X 12, will have a dramatic and unexpected effect on the tear characteristics of adhesive tapes incorporating such fabrics.

Texturized, or false-twist yarns, are continuous filament yarns which have been given increased bulk and loft by the introduction of numerous loops, curls, and coils along the length of the individual filaments by aerodynamic or twist-set-untwist processes.
Such yarns, commonly using nylon or polyester ~ilamen~s, are a standard article of commerce. Due to the numerous irregularities induced along the individual filament lengths~ such yarns are inherently elastic to some degree, Representative products and processes describing such yarns are set forth in U,S~ Patents 2783609 and 2869967, among others.

The invention may be more fully understood with reference to the following description and drawings, in which FIGURES 1 and 2 are representations of the characteristically irregular torn ends of adhesive tapes using low-count fabrics of 24 X 20 or 20 X 12 count wherein the filling yarns in the fabric are spun yarns or non-texturized continuous filament yarns.

FIGURE 3 is a similar representation of the torn end of an adhe-sive tape wherein the fabric component is a 20 X 12 woven gauze with texturized yarns in the filling of the fabric.

FIGURE 4 is a highly magnified cross-sectional view of a section of a texturized yarn 16 as used in the fabric employed in the adhesive tapes of the inVention, consisting of convoluted filaments 17.

FIGURE 5 is a highly magnified cross-sectional view of a segment of a three-component adhesive tape in which a spun yarn or a non-texturized continuous filament yarn is employed in the filling of the fabric.

FIGURE 6 is a similar view of an adhesi~e tape in which texturized yarns are employed in the filling of the fabric.

FIGURE 7 is a highly magnified view of a segment of a woven fabric suitable for use in this invention~

FIGURE 8 is a similarly magnified view of a nonwoven fabric suitable for use in this invention, Referring now to FIGURE 6~ the adhesive tapes 20 of this invention ~5~

comprise a pliable backing substrate 10, commonly a layer of polyolefine film; a layer of adhesive 12; and a reinforcing fabric such as a low~count woven gauze or a yarn-reinforced nonwoven fabric. In FIGURE 5, 14 represents the cross-section of a filling yarn in a prior art fabric in which a non-texturized continuous filament yarn is employed in the filling of the fabric~
In FIGURE 6, 16 represents a similar cross section of a filling yarn in fabric of this invention in which a texturized yarn is employed in the filling.

FIGURES 1 and 2 are elevation views of prior art three-component adhe~ive tapes, with hand-torn edges 26 and 28 respectively~
wherein a low-count woven 20 X 12 fabric with spun yarns or non-texturized continuous filament filling yarns employed in the filling of the fabric. Depending on the specific nature of the adhesive, which affects the degree of union between fabric and base, the tear may be of the so-called "step ladder" variety as at 26 in FIGURE 1, or of the variety shown at 28 in FIGURE 2, where the yarns 30 of thc fabric have pulled away rom the base 10. Either type of tear is undesirable, interfering with a smooth, even, rapid appllcation of such tapes, By contrast, FIGURE 3 is a view of the hand torn edge 32 of a tape 20 of this invention, employing texturized yarns in the filling of a woven 2~ X 12 fabric.

A possible explanation of the efficiency of texturized yarns in effecting this result may lie in the randomly kinked, coiled, and curled nature of the filaments of such yarns. Microscopic studies of tapes made using non-texturized continuous filament or ~s~zq spun yarns versus texturized yarns in the filling of such fabrics reveals that the latter ~fford approximately twice the filling yarn coverage, which is a measure of the degree of adhesion between individual filaments, adhesive mass, and the pliable base. As an example, considering FIGURES 5 and 6 again, a tape made using non-texturized contlnuous filament yarns in the fill-ing of a 20 X 12 fabric revealed that the width of the 220 denier continuous filament yarn averaged 0.33 mm., as shown at 14 in FIGURE 5. An otherwise identical tape ! using 200 denier textur-ized polyester yarn in the filling or lateral direction (FIGURE 6)revealed that the width of the filling yarns averaged 0,65 mm., as shown at 16 in this figure, thus doubling the area of mass-to-yarn contact.

An additional advantage of the use of texturized yarns in accordance with this invention lies in the fact that since such yarns flatten out and spread more than non-texturized yarns, less adhesive mass is needed to unite the base, the fabric, and the mass into an integral tape, as shown by comparison of the relative thicknesses of adhesive mass 13 in prior art tapes, FIGURE 5, and the adhesive mass 12 of the tapes of thi~ invention, ~IGURE 6. Since the function of the adhesive mass is -to preSent a smooth even surface to the article to which it is to be appliedr suficient mass is used to cover the reinforcing fabric and anchor it securely to the backing~ In this respect, the spread-ing characteristic of the texturized yarn 16 allows as thinner film of adhesive mass to be used! resulting in a thinner~ more pl.iable tape as well as economics in adhesive mass reduction~

The following example is illustratiye only and does not limit the ~1~5~2~

scope of the invention.

SPECIFIC ~MBODIMENT OF THE INVENTION

A gauze fabric was constructed using 20 yarns per inch of 30's cotton in the warp, 12 false-twist polyester yarns, 200 denier 96 filament, per inch of filling~ In a calendering operation, this gauze was superimposed on a 4 mil thick low density polyethylene film and combined with a 6 mil thick layer of adhesive mass. The adhesive mass was composed of 40~ rubber~ 30 fillers, 28% tackifier resins, and 2~ process aids. Calendering was by means of a 3 roll calender with the top roll heated to 400 degrees F, center roll 200 degrees F, bottom roll 210 deyrees F. Processing speed was 35 yards per minute.

When torn by hand, the tear properties imparted by this 20 X 12 fabric were comparable to the tear shown in FIGURE 3, an even tear hitherto achieved only by the use of fabrics of 44 X 28 count, 30~s cotton yarns, or 32 X 28 count, with spun yarns of 50~ polyester, 5Q~ catton, or by eabrics of similar higher count.

OT}IE~ EMBODIMENTS OF TlIE INVENTION.

The tape construction of this invention may utilize a wide variety of adhesive masses; hot melts, acrylics, natural and synthetic rubbers, etc. Although the mass is customarily of pressure sensitive nature, the invention is equally applicable to masses of a heat-or solvent-activated mass.

It is also applicable to the use of various pliable bases~ with polyethylene film of 4 to 6 mil thickness being preferred. The film may be preformed or film extrusion, fabric lamination! and adhesive application may be combined in a single operation.

Similarly, in place of woven fabrics as reinforcement, nonwoyen fabrics or similar pliable but relatively non-extenslble fibrous bases may be employed.

FIGURE 7 is a magnified view of a suitable woven fabric, consist-ing of regular warp yarns 17 of spun cotton and filling yarns 16 of a texturized type, as characterized above.

FIGURE 8 is a magnified view of a su.itable nonwoven fabric, con-sisting of an unwoven array of textile length fibers, having adherent thereto a set of texturized yarns 16 arranged laterally of the fabric, corresponding to the filling in a woven fabric.
In such yarn-reinforced fibrous bases, the fibrous array should be of a random or isotropic nature, so that the fiber orientation does not interfere with the clean hand-tear nature of the tape.

Claims (8)

THE EMBODIMENTS OF THE INVENTION IN WHICH AN EXCLUSIVE PROPERTY
OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. In adhesive tapes which comprise a pliable backing material, a reinforcing fabric, and a layer of adhesive mass adherent to said backing material and said fabric, the improvement in which the reinforcing fabric comprises texturized yarns in the filling direction.
2. The adhesive tape according to claim 1 in which the adhesive mass is of a pressure-sensitive nature.
3. The adhesive tape according to claim 1 in which the reinforc-ing fabric is a woven fabric.
4. The adhesive tape according to claim 3 in which the woven fabric does not contain more than 20 yarns per inch of fabric.
5. The adhesive tape according to claim 1 in which the reinforc-ing fabric comprises a bonded isotropically distributed fibrous array with not more than 20 texturized yarns per inch of fabric adherent to said array, said texturized yarns extending in the filling or lateral direction.
6. The adhesive tape according to claim 1 in which the pliable backing material is a polyolefine film.
7. The adhesive tape according to claim 1 in which the adhesive mass is of a heat-activated nature.
8. The adhesive tape according to claim 1 in which the adhesive mass is of a solvent-activated nature.
CA000378106A 1980-09-04 1981-05-22 Adhesive tapes Expired CA1145624A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US183,887 1980-09-04
US06/183,887 US4303724A (en) 1980-09-04 1980-09-04 Adhesive tapes containing texturized yarns

Publications (1)

Publication Number Publication Date
CA1145624A true CA1145624A (en) 1983-05-03

Family

ID=22674724

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000378106A Expired CA1145624A (en) 1980-09-04 1981-05-22 Adhesive tapes

Country Status (14)

Country Link
US (1) US4303724A (en)
JP (1) JPS5776075A (en)
AU (1) AU543408B2 (en)
BE (1) BE890236A (en)
CA (1) CA1145624A (en)
DE (1) DE3134712A1 (en)
DK (1) DK157619C (en)
FR (1) FR2489353A1 (en)
GB (1) GB2082969B (en)
MX (1) MX158192A (en)
NL (1) NL189864C (en)
PH (1) PH17890A (en)
SE (1) SE453995B (en)
ZA (1) ZA816111B (en)

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GB8334560D0 (en) * 1983-12-29 1984-02-01 Cc Developments Ltd Carbonisable fabrics
US4654254A (en) * 1984-10-11 1987-03-31 The Kendall Company Adhesive tape
JPH033556Y2 (en) * 1985-11-05 1991-01-30
US4772499A (en) * 1986-10-01 1988-09-20 The Kendall Company Novel tearable non-woven webs and products employing same
AU606179B2 (en) * 1987-07-29 1991-01-31 Kendall Company, The An adhesive tape
US5055340A (en) * 1987-08-06 1991-10-08 Asahi Kagaku Kogyo Co., Ltd. Grip tape
US5108815A (en) * 1988-07-28 1992-04-28 The Kendall Company Embossed duct tapes
US4992331A (en) * 1988-09-30 1991-02-12 The Kendall Company Novel conformable adhesive tape
US5047285A (en) * 1989-06-30 1991-09-10 Hermitage Industries, Inc. Fabric, pressure sensitive tape
DE3925893A1 (en) * 1989-08-04 1991-02-07 Kufner Textilwerke Gmbh FULLY SYNTHETIC HEAT-SEALABLE SHIRT INJECTION
US5017425A (en) * 1990-07-12 1991-05-21 Milliken Research Corporation Tricot knitting machine improvement
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BE890236A (en) 1982-01-04
NL189864C (en) 1993-08-16
DE3134712A1 (en) 1982-04-29
GB2082969A (en) 1982-03-17
FR2489353A1 (en) 1982-03-05
MX158192A (en) 1989-01-16
NL8104089A (en) 1982-04-01
FR2489353B1 (en) 1985-03-08
JPH0239549B2 (en) 1990-09-06
GB2082969B (en) 1984-08-08
US4303724A (en) 1981-12-01
DE3134712C2 (en) 1991-03-07
JPS5776075A (en) 1982-05-12
AU7492081A (en) 1982-03-11
SE453995B (en) 1988-03-21
PH17890A (en) 1985-01-21
DK157619C (en) 1990-06-18
ZA816111B (en) 1982-08-25
NL189864B (en) 1993-03-16
SE8105239L (en) 1982-03-05
DK157619B (en) 1990-01-29
AU543408B2 (en) 1985-04-18
DK390581A (en) 1982-03-05

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